The win gives Alabama a 4-0 record here as it plays its fifth and final game on Saturday night against the Bahamas Senior National Team.
"I thought the competition was better tonight," said Alabama head coach Mark Gottfried whose team not only played a late night tip but came from a 40-37 halftime deficit to win the game. "I think what's happened is, since we've been on the island and have been winning some games, there's some pride at stake here and they're challenging us a lot more. More of the better players are playing in these games.
"We still have a long way to go. It was a close game in the 50's there, and then Antoine got on a good spurt there and helped us. Tonight's game helped us. We did get a little better tonight and I like that. They challenged us, and we responded.
"We want to take advantage of each game opportunity to get better, and I think defensively there so much we have to work on.
Alabama will play the final game of its road trip versus the Bahamas Senior National Team. "I think our guys are going to come out and play hard tomorrow (Saturday)," Gottfried said. "I think Saturday night's game will be the best one yet because the players here want to make a statement."
Pettway's string of 3-point shots began at the 1:53 mark in the third period, giving Alabama at that point a 62-54 lead. Pettway shot 71 percent for the game, making 10 of 14 from the field.
Earnest Shelton was one of three Alabama players to score in double digits as well. Shelton scored 19 points, though he was only 3 of 15 from 3-point range. Shelton was averaging 31 points after three games, most of those points coming from the long range.